Protective casings are designed to shield devices or objects from damage, dust, moisture, and other environmental factors. Commonly used for electronics, such as smartphones and tablets, these casings can be made from materials like plastic, rubber, or metal. They help extend the lifespan of the device by providing a barrier against impacts and scratches. In addition to electronics, protective casings are also utilized in various industries, including automotive and aerospace. For example, automotive components often use casings to protect sensitive parts from heat and debris. Similarly, aerospace equipment relies on durable casings to withstand extreme conditions during flight.